在tableview中显示文档目录中的音频文件，并在swift 3中选择行时播放音频文件

import AVFoundation

let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let audioFiles = try? FileManager.default.contentsOfDirectory(atPath: documentsPath).filter({ $0.hasSuffix(".mp3") })

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
    cell.textLabel?.text = audioFiles?[indexPath.row]
    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    guard let audioFile = audioFiles?[indexPath.row] else {
        return
    }
    
    let audioPath = (documentsPath as NSString).appendingPathComponent(audioFile)
    let audioURL = URL(fileURLWithPath: audioPath)
    
    do {
        let audioPlayer = try AVAudioPlayer(contentsOf: audioURL)
        audioPlayer.play()
    } catch {
        print("Failed to play audio: \(error.localizedDescription)")
    }
}